1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 2-{3-Pyridin-3-yl-1-[(5-pyridin-2-yl-2-thienyl)carbonyl]-4,5-dihydro-1h-pyrazol-5-yl}phenol

HRID 1712955Notes

Reaction equation

HRID 1712955 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C:7]2[CH2:11][CH:10]([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=3[OH:18])[NH:9][N:8]=2)[CH:2]=1.[N:19]1[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=1[C:25]1[S:29][C:28]([C:30](O)=[O:31])=[CH:27][CH:26]=1.CCN=C=NCCCN(C)C>C(Cl)Cl>[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C:7]2[CH2:11][CH:10]([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=3[OH:18])[N:9]([C:30]([C:28]3[S:29][C:25]([C:20]4[CH:21]=[CH:22][CH:23]=[CH:24][N:19]=4)=[CH:26][CH:27]=3)=[O:31])[N:8]=2)[CH:2]=1

Participants

5

Reactant 3

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 7364825-(Pyridin-2-yl)thiophene-2-carboxylic acidHCID 226963962-(3-pyridin-3-yl-4,5-dihydro-1H-pyrazol-5-yl)phenol

Product 1

HCID 249635882-{3-Pyridin-3-yl-1-[(5-pyridin-2-yl-2-thienyl)carbonyl]-4,5-dihydro-1h-pyrazol-5-yl}phenolYield 72%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 2-(3-pyridin-3-yl-4,5-dihydro-1H-pyrazol-5-yl)phenol (1.01 g, 4.22 mmol) and 5-pyridin-2-ylthiophene-2-carboxylic acid (0.886 g, 4.32 mmol) in DCM (50 mL) was added EDCI (0.970 g, 5.10 mmol). The reaction mixture was allowed to stir at rt overnight. The solution was filtered and the resulting precipitate was washed with DCM to give a light tan solid. The filtrate was concentrated and the resulting residue was purified by column chromatography to give a yellow solid. The two batches of product were combined to give 2-{3-pyridin-3-yl-1-[(5-pyridin-2-yl-2-thienyl)carbonyl]4,5-dihydro-1H-pyrazol-5-yl}phenol (I-76) (1.293 g, 72%) as a tan solid. 1H NMR (400 MHz, d6-DMSO, HCl salt) δ: 9.71-9.84 (bs, 1H), 9.11-9.16 (m, 1H), 8.72-8.77 (m, 1H), 8.60-8.65 (m, 1H), 8.35-8.42 (m, 1H), 8.06 (d, 1H), 8.01-8.04 (m, 1H), 7.84-7.94 (m, 2H), 7.66-7.73 (m, 1H), 7.34-7.41 (m, 1H), 7.04-7.12 (m, 1H), 6.93-6.99 (m, 1H), 6.82-6.87 (m, 1H), 6.73 (t, 1H), 5.87 (dd, 1H), 3.92 (dd, 1H), and 3.22 (dd, 1H). LCMS: (FA) ES+ 427.5, ES-425.4.

Workup

  1. filtrationThe solution was filtered
  2. washthe resulting precipitate was washed with DCM
  3. customto give a light tan solid
  4. concentrationThe filtrate was concentrated
  5. customthe resulting residue was purified by column chromatography
  6. customto give a yellow solid

Sources & evidence

ORD record
ord-e0910065db3e4e828f91aa01a2df9974
Source dataset
uspto-grants-2010_09
Patent number
US07795249B2

Reaction notes

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